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Article

Waste Wood Particles from Primary Wood Processing as a Filler of Insulation PUR Foams

Department of Wood Based Materials, Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60-627 Poznań, Poland
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Academic Editors: Réh Roman, Ľuboš Krišťák and Petar Antov
Materials 2021, 14(17), 4781; https://doi.org/10.3390/ma14174781
Received: 11 August 2021 / Revised: 19 August 2021 / Accepted: 20 August 2021 / Published: 24 August 2021
(This article belongs to the Special Issue Advanced Eco-friendly Wood-Based Composites)
A significant part of the work carried out so far in the field of production of biocomposite polyurethane foams (PUR) with the use of various types of lignocellulosic fillers mainly concerns rigid PUR foams with a closed-cell structure. In this work, the possibility of using waste wood particles (WP) from primary wood processing as a filler for PUR foams with open-cell structure was investigated. For this purpose, a wood particle fraction of 0.315–1.25 mm was added to the foam in concentrations of 0, 5, 10, 15 and 20%. The foaming course of the modified PUR foams (PUR-WP) was characterized on the basis of the duration of the process’ successive stages at the maximum foaming temperature. In order to explain the observed phenomena, a cellular structure was characterized using microscopic analysis such as SEM and light microscope. Computed tomography was also applied to determine the distribution of wood particles in PUR-WP materials. It was observed that the addition of WP to the open-cell PUR foam influences the kinetics of the foaming process of the PUR-WP composition and their morphology, density, compressive strength and thermal properties. The performed tests showed that the addition of WP at an the amount of 10% leads to the increase in the PUR foam’s compressive strength by 30% (parallel to foam’s growth direction) and reduce the thermal conductivity coefficient by 10%. View Full-Text
Keywords: polyurethane foams; filler; wood particles; structure; properties polyurethane foams; filler; wood particles; structure; properties
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MDPI and ACS Style

Mirski, R.; Dukarska, D.; Walkiewicz, J.; Derkowski, A. Waste Wood Particles from Primary Wood Processing as a Filler of Insulation PUR Foams. Materials 2021, 14, 4781. https://doi.org/10.3390/ma14174781

AMA Style

Mirski R, Dukarska D, Walkiewicz J, Derkowski A. Waste Wood Particles from Primary Wood Processing as a Filler of Insulation PUR Foams. Materials. 2021; 14(17):4781. https://doi.org/10.3390/ma14174781

Chicago/Turabian Style

Mirski, Radosław, Dorota Dukarska, Joanna Walkiewicz, and Adam Derkowski. 2021. "Waste Wood Particles from Primary Wood Processing as a Filler of Insulation PUR Foams" Materials 14, no. 17: 4781. https://doi.org/10.3390/ma14174781

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